EP 0266143 B1 19940309 - Process for preparing highly pure cyclic esters.
Title (en)
Process for preparing highly pure cyclic esters.
Title (de)
Verfahren zur Herstellung von zyklischen Estern hoher Reinheit.
Title (fr)
Procédé de préparation d'esters cycliques de haute pureté.
Publication
Application
Priority
US 92548486 A 19861029
Abstract (en)
[origin: EP0266143A2] A process for making highly pure cyclic esters by heating a copolymer of alpha -hydroxy acid or its ester on a thermally stable polyether core.
IPC 1-7
IPC 8 full level
A61K 47/34 (2006.01); A61L 17/00 (2006.01); A61L 27/00 (2006.01); C07D 319/12 (2006.01); C08G 65/32 (2006.01); C08G 65/48 (2006.01)
CPC (source: EP KR US)
C07D 309/12 (2013.01 - KR); C07D 319/12 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0266143 A2 19880504; EP 0266143 A3 19900307; EP 0266143 B1 19940309; AR 243879 A1 19930930; AT E102617 T1 19940315; AU 591432 B2 19891130; AU 8041787 A 19880505; BR 8705758 A 19880531; CA 1277672 C 19901211; CN 1015986 B 19920325; CN 87107549 A 19880511; DD 264695 A1 19890208; DE 3789274 D1 19940414; IE 872885 L 19880429; IL 84303 A0 19880331; IL 84303 A 19930114; JP S63152375 A 19880624; KR 880005116 A 19880628; MX 165197 B 19921030; PT 86017 A 19871101; PT 86017 B 19900731; US 4727163 A 19880223; ZA 878121 B 19890726
DOCDB simple family (application)
EP 87309416 A 19871026; AR 30915087 A 19871028; AT 87309416 T 19871026; AU 8041787 A 19871028; BR 8705758 A 19871028; CA 549976 A 19871022; CN 87107549 A 19871028; DD 30835787 A 19871028; DE 3789274 T 19871026; IE 288587 A 19871028; IL 8430387 A 19871028; JP 27290087 A 19871028; KR 870011957 A 19871028; MX 900287 A 19871028; PT 8601787 A 19871028; US 92548486 A 19861029; ZA 878121 A 19871029